Pine Stock, Round Cams

ferdinand wrote:

sairaj999 wrote:hi ... how r u im big fan of crossbows .. but how do u cut spring steel i have many in my garage and many tool but i want to ask u how to cut it in shave without losing its spring abelitiy

Only way to cut it is a grinding/cutting disc in a anglegrinder.
I did it and works verry well.

Nice build by the way!

chaz wrote:Regerald,

You evidently have a nice place to rummage. The build seems very well planned out and very well executed! Thanks for sharing. Did you build the trigger assembly? Did you build the sight mount?What was the source for the cams, or did you make them also? What is the length of the prod pieces? Did you use another compound crossbow as an example for the compounf assembly? The whole build is wonderful ! It would be worth the trip to the countryside to shoot the heck out of it!It appears youy must have access to quite a shop.

Chaz

Regerald wrote:

chaz wrote:Regerald,

You evidently have a nice place to rummage. The build seems very well planned out and very well executed! Thanks for sharing. Did you build the trigger assembly? Did you build the sight mount?What was the source for the cams, or did you make them also? What is the length of the prod pieces? Did you use another compound crossbow as an example for the compounf assembly? The whole build is wonderful ! It would be worth the trip to the countryside to shoot the heck out of it!It appears youy must have access to quite a shop.

Chaz

Well, thanks, but it only seems to be well-planned. Many parts of a crossbow I had to remake, like the trigger mech, which at first was way too heavy. At present it looks like this:

Also cams were changed. The whole composition of a crossbow doesn't allow excentric cams to realize all it's potential (draw lenght is too short), so I changed it to a more primitive, but also lighter, circular "pulley".

Those were made on a lathe (I don't possess one, had to "borrow") Got slight rise in velocity, and shooting sound became softer with a synthetic string (made of braided fishing line, possibly dyneema).
Actually, polyfilament fishing line works wery well in a crossbow string, so if you have some, no need to buy any special material..

Lenght of a one limb is 33cm or something about 13 inches. Every part was made by myself, altough for pulleys and nut in trigger mech I had to borrow "heavy machinery" as lathe and miller..

sairaj999 wrote:how u cut ur prod and i want to make fiberglass prod did u use wood pls make one how to make i want to make one

chaz wrote:
I have wondered about the possibility of the woven string( that foundation workers use when setting forms for foundations) of course looped several times and then wrapped with string to make the bow string, however polyfilament fishing line idea is worth consideration. I'm not ready to tackle the compound thing, but I'm about to start my build and intend to try my hand at every aspect and of course, like yourself, I have aquired a variety of materials . No one should hold their breath in anticipation, this is going to take a while.

Thanks again

Chaz

chaz wrote:Thanks for the input. Your first pictures show what appears to be wire cable, did that not workout too well for a string ?

Chaz

Regerald wrote:

chaz wrote:
I have wondered about the possibility of the woven string( that foundation workers use when setting forms for foundations) of course looped several times and then wrapped with string to make the bow string, however polyfilament fishing line idea is worth consideration. I'm not ready to tackle the compound thing, but I'm about to start my build and intend to try my hand at every aspect and of course, like yourself, I have aquired a variety of materials . No one should hold their breath in anticipation, this is going to take a while.

Thanks again

Chaz

I would reject the idea of that string, it stretches too much. At list one that I've seen there. Of cause, it can still be used as a bastard string or temporary string for a tillering, but shooting performance wouldn't be impressive.
I do really appreciate the simplicity, that's why I think I wont build any other compound thing in near future. Along with simplicity we usually get reliability, which for me is more important than peak performance.
So, very good luck with your project, I'll wait to see it.

t.Regerald